An industrial plant processes its waste water through a sedimentation tank that removes hazardous metals by precipitating them as insoluble carbonate salts. if sodium carbonate is gradually added to the tank, what would be the order of precipitation of the metals, pb2+, cu2+, hg22+, and zn2+ if each is ≈ 1.0 × 10–4 m? ( ksp pbco3 = 7.4 × 10–14, ksp cuco3 = 1.4 × 10–10, ksp hg2co3 = 8.9 × 10–17, and ksp znco3 = 1.4 × 10–11)

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.